Adjustable platform for mine cars



March 12, 1946. A. FEUCHT ADJUSTABLE PLATFORM FOR MINE CARS 3 Sheets-Sheet 1 Filed Aug. 17, 1943 INVENTOR AL fif/P r FfUCH T March 12, 1946. A. FEUCHT 2,396,365

ADJUSTABLE PLATFORM FOR MINE CARS Filed Aug. 17, 1943 5 Sheets-Sheet 2 INVENTOR. ALBEIPT ffUC/fT March 12, 1946. A. FEUCHT 2,396,365

ADJUSTABLE PLATFORM FOR MINE CARS Filed Aug. 17, 1943 3 Sheets-Sheet 3 INVENTOR. ALBt'RT FEUCl/T Patented Mar. 12, 1946 ADJUSTABLE PLATFORM FOR MINE CARS Albert Feucht, Garfield Heights, Ohio, asslgnor to The Cleveland Pneumatic Tool Company, Cleveland, Ohio, a corporation ol hlo Application August 17, 1943, Serial No. 499,022

'2 Claims. (01. 255-51) This invention relates to mine cars or other structures having a movable work platform or stage and aims to provide novel mechanism for raising and lowering such platform.

Another object of this invention is to provide an improved mine car or the like having a movable work platform and wherein guide means for the stage has cooperating screw elements therein for raising and lowering the platform.

A further object of my invention is to provide an improved structure, of the character mentioned, in which the guide and elevating means for the work platform are located so as not to interfere with the operation of rock drills or the like mounted on said structure and to enable the elevating means to be driven by a single motor.

Still another object of the present invention is to provide a novel elevating mechanism, for a work platform or the like, having pairs of cooperating screw elements and-in which one element of each such pair is driven by an endless chain extending thereover.

The invention can be further briefly summarized as consisting in certain novel combinations and arrangement of parts hereinafter described, and particularly set out in the appended claims.

In the accompanying sheets of drawings,

Fig. 1 is a side elevation showing a mine car embodying my invention;

Fig. 2 is a plan view thereof;

Fig. 3 is a rear end view of the mine car; and

Fig. 4 is a vertical sectional view taken through the guiding and elevating mechanism as indicated by line II-t of Fig. 3.

To proceed with a more detailed description of the invention, I show in the drawings a mine car or "jumbo Ill having a work stage or platform II thereon and guiding and elevating mechanism I2 for raising and lowering the platform. The mine car Ill may comprise an undercarriage or body I3 having wheels I4 adapted to operate on rails I5. The undercarriage or body I3 may include a main or center section I31; and laterally projecting wing sections I3b hingedly connected therewith. The sections I3a and I3b form a work platform for the operation of a pair of laterally spaced rock drills I6 carried by suitable mounts H which are attached to the central section I311. The movable platform II forms a work stage for another pair of laterally spaced rock drills l8 and comprises a main or central section Ila and wing sections IIb hingedly connected to such central section. The rock drills I8 are operably supported by lateralu spaced mounts I9 which are attached to the central section Ila. The undercarriage I3 may also have a framework 20 thereon which is located rearwardly of the platform II and serves various purposes including that of a support for an air line ZI extending to the manifold 22. This framework has channel-shaped uprights or posts 23 at the four corners thereof.

The platform II is adapted to be raised and lowered with respect to the undercarriage I3 so as to permit the mine car to travel through tunnels or passages having a relatively low ceiling height. For mounting platform II on the undercarriage I3 so as to permit such raising and lowering, I provide a plurality, in this instance three, upright hollow guide members 24 on the central section I 3a of the undercarriage and a corresponding number of guide sleeves or followers 25 which are telescopically slidable on the guide members 24 and with which the central section Ila of the'platform II is connected. As shown in Fig. 2, the guide members 24 and their followers 25 are arranged or located so as to define a triangle having its apex at or adjacent the forward end of the undercarriage I3 and its base located a substantial distance rearwardly of such front end. This triangular arrangement for the guide members and guide followers 24 and 25 permits the mounts I1 and IQ for the rock drills I6 and IE to be located on opposite sides of the work platforms I3 and II leaving rela-v tively large unobstructed spaces for convenient operation of the rock drills.

As shown in Fig. l the work platform ll for the upper pair of rock drills l8 may be located in forwardly offset or overhanging relation with respect to the lower work platform or undercarriage l3. In addition to the guide followers 25 the movable work platform I! may be guided in part by grooved guide followers 26 which are connected with the platform by means' of the brackets 21 and have sliding engagement with the forward flanges 23aof the forward pair of guide members 24 and extend through the work platform H. The platform is connected with the upper ends of the guide sleeves 25 by means of suitable flanged fittings 33 mounted on the upper surface of the platform.

The fittings 33 support a substantially V- shaped hollow casing 34 in spaced relation above the platform H. The screw elements 32 are rotatably supported by pairs of bearings 35 and 33 which are mounted in the fittings 33 and the casing 33, the bearings 36 being thrust bearings which carry the load of the platform ii. Sprockets 31 are mounted on the upper ends of the screw elements 32 between the bearings 35 and 36 and lie inside the V-shaped casing 34. An endless drive chain 38 extends over or around the sprockets 3'2 for imparting rotation to the screw elements 32. The V-shaped casing 34 forms a housing for the drive chain 38 and the sprockets and protects the same from dust and other foreign matter.

For driving the screw elements 32 I provide a power device 40 which, in this instance, i in the form of a multiple cylinder engine adapted to be operated by compressed air or other pres sure fluid. The motor 40 is located within the triangle defined by the guide sleeves 25 and relatively close to one of these guide sleeves preferably the one located at the apex of the triangle. The motor is suitably mounted on the work platform it with its shaft in vertical relation and extending upwardly into the V-shaped casing 36. A sprocket M is mounted on the upper end of the motor shaft and a bight of the endless drive chain 38 extends over or around this sprocket so that when the motor tit is operated, it will simultaneously drive all three of the screw elements 32 and will cause raising and lowering of the work platform ii depending upon the direction in which the motor is operated.

From the foregoing description and accompanying drawings, it will now be readily seen that I have provided an improved mine car having a work platform which is adapted to be lowered for passage of the mine car through drifts or tunnels having a relatively low ceiling height, and raised to the most advantageous height for drilling considerably higher tunnels or ore bodies. It will also be seen that I have provided novel guiding and elevating mechanism by which a work platform or stage can be raised or lowered in an efi'lcient manner and which requires only a single driving motor and will cause minimum interference with rock drills or other machine tools which may be mounted on such platform.

While I have illustrated and described the improved mine car and elevating mechanism of my invention in considerable detail it will be understood of course that I do not wish to be correspondingly limited but regard my invention as including all changes and modifications coming within the spirit of the invention and the scope of the appended claims.

Having thus described my invention I claim:

1. In apparatus of the character described, a wheeled carriage, three vertical telescoping guides mounted on said carriage at the corners of an isosceles triangle, the base of which extends transversely of the carriage, a work stage movable up and down on said guides, and a pair of drill mounts disposed at the sides of the triangle between the base and apex thereof.

2. In apparatus of the character described, a wheeled carriage, three vertical telescoping guides mounted on said carriage at the corners of an isosceles triangle, the base of which extends transversely of the carriage, a work stag secured to the upper elements of said telescoping guides below the top thereof, and a pair of drill mounts carried by the stage on the sides of the triangle between the base and apex thereof.

ALBERT FEUCHT. 

